2.6a

Select the answer that best describes a reversible change

• When a new substance is formed.

• A change which cannot be undone or reversed.

• When a change is made to a substance, but it can be changed back to its original state.

• All of the above.

Tags

NGSS.5-PS1-4

Select the answer that best describes an irreversible change

• When a substance can be changed back or reversed.

• When a substance is changed, and it cannot be changed back.

• When a new substance is formed.

• All of the above.

Ice to water is an example of..

• Reversible Change

• Irreversible Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Melting wax is an example of...

• Reversible Chnage

• Irreversible Change

Tags

NGSS.MS-PS1-4

Which of the following is an example of a reversible change?

• A puddle turns to ice on a very cold winter's day

• A bicycle left out in the rain begins to rust

Which of the following is a sign of an irreversible change taking place?

• A change in colour

• A sudden change in temperature

• Vigorous bubbling

• All of the above

Tags

NGSS.MS-PS1-2

Name the process that has been used to change this state from solid chocolate to melted chocolate

• Cooling

• Freezing

• Heating

• Rusting

Tags

NGSS.MS-PS1-4

Melting wax is an example of a

• Reversible Change

• Irreversible Change

Tags

NGSS.MS-PS1-4

Melting butter is an example of a

• Reversible Change

• Irreversible Change

Tags

NGSS.MS-PS1-4

Which of the following best describes a reversible change?

• A change that results in a new substance.

• A change that can be undone or reversed.

• A change that involves a chemical reaction.

• A change that is permanent.